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31 May 2019 What can echolocation recordings reveal about the foraging ecology of Saccolaimus saccolaimus (Emballonuridae) in north-western Australia?
N. L. McKenzie, R. D. Bullen
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Abstract

Echolocation sequences reveal aspects of the foraging ecology of Saccolaimus saccolaimus (Emballonuridae). In combination, pulse peak-frequency and fineness-of-tuning values derived from free-flying search-mode echolocation sequences emitted by S. saccolaimus in north-western Australia imply that it generally forages in uncluttered airspaces using an air superiority foraging strategy. Wing-beat frequency values, derived from pulse repetition rates in these sequences, reveal that it has a maximum aerobic level-flight speed of 8.1 m s–1 (used for foraging). These predictions are consistent with deductions based on airframe design parameters taken from museum specimens, and with available field observations. The echolocation recordings provided a quick, passive, cost-effective characterisation of foraging niche, useful for conservation planning.

© CSIRO 2018
N. L. McKenzie and R. D. Bullen "What can echolocation recordings reveal about the foraging ecology of Saccolaimus saccolaimus (Emballonuridae) in north-western Australia?," Australian Journal of Zoology 66(5-6), 326-334, (31 May 2019). https://doi.org/10.1071/ZO19012
Received: 31 January 2019; Accepted: 13 May 2019; Published: 31 May 2019
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Bat
ecomorphology
flight speed
Fpeak
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